[SI-LIST] USB 3.0 questions
- From: "J. Eric Gamble" <jgamble1@xxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 19 Mar 2009 11:29:30 -0700 (PDT)
Hi everyone,
A few questions about the new USB 3.0 spec. I just downloaded and started
reading the spec.
1) In sections 6.7.3, figure 6-14, the transmitter eye is measured after the
Reference Cable and Reference Test Channel. Where are those two things defined?
On a related note:
2) In Rev 0.5 of the USB 3.0 Electrical Compliance Methodology white paper,
Section 3 talks about Compliance channels and assert that the Touchstone files
are available at the usb.org web site (www.usb.org).
a) Is this the same as the "Reference Test Channel" mentioned in the spec.
b) Where on the usb.org web site are these files located. I've looked,
searched, and googled and do not see them. (Hopefully I'm looking in the wrong
place).
Finally,
3) I'm particularly interested in understanding the breakdown in system
channel loss between the host(including PCB, internal cables, and front panel
connector), the Cable itself, and the Device PCB. Can anyone comment on the
intent/assumptions of the spec writers?
Thanks,
Eric Kolet Gamble
gamble@xxxxxxxx
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
